제출 #42998

#제출 시각아이디문제언어결과실행 시간메모리
42998Mouhanad_HafezBaloni (COCI15_baloni)C++11
100 / 100
219 ms656 KiB
#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define SI size()
#define pb push_back
using namespace std;
const ll MAX=1000007;
ll i,m,n,sum,a[MAX],ans;
int main(){
    int ans=0;
    int n;
    cin>>n;
    int x;
    for(int i=0;i<n;i++)
    {
        cin>>x;
        if(a[x]==0)
        {
            ans++;
            a[x-1]++;
        }
        else
        {
            a[x]--;
            a[x-1]++;
        }
    }
    cout<<ans<<endl;
 
    return 0;
}


#Verdict Execution timeMemoryGrader output
Fetching results...